为什么文本框代码不适用于Xcode 8 Obj-C？

Question

ViewController.h

@interface ViewController : UIViewController{

IBOutlet UITextField *Signup;
IBOutlet UITextField *Login;

}
@property(nonatomic, retain)IBOutlet UITextField *Signup;
@property(nonatomic, retain)IBOutlet UITextField *Login;

-(IBAction)TYPE:(id)sender;

ViewController.m

@synthesize Signup;
@synthesize Login;

-(IBAction)TYPE:(id)sender{
[Signup resignFirstResponder];
[Login resignFirstResponder];
}

在模拟器中，当我单击textfield时，会得到以下错误消息：

2017-04-14 18:43:52.616362 Prototype13075 13075:119579用于systemgroup.com.apple.configurationprofiles路径的系统组容器是systemgroup.com.apple.configurationprofiles 2017-04-14 18:43:52.640402 Prototype13075 13075:119579从私有有效用户设置读取。2017-04-14 18:43:52.727 Prototype13075 13075:119579找不到支持键盘iPhone-PortraitChoco-NumberPad类型4的键盘；使用1316927560_PortraitChoco_iPhone-Simple-Pad_Default 2017-04-14 18:43:53.607676 Prototype13075 13075:119579 _BSMachError:端口7403；(os/kern)无效能力(0x14)“无法插入COPY_SEND”2017-04-14 18:43:53.608246 Prototype13075 13075:119579 _BSMachError:端口7403；(os/kern)无效名称(0xf)“无法发送正确发送”

我已经两年没有使用Xcode了，但是同样的代码工作得很好，为什么Xcode 8，iOS 10不能工作呢？

Answer 1

Xcode 8的模拟器非常冗长。这些信息并不意味着什么特别的。

- BTW --

您的代码是以一种非常旧的风格编写的，这已经不是最佳实践了。更好的办法是：

@interface ViewController : UIViewController
// It's no longer necessary to have your properties between { and }

@property (nonatomic, weak) IBOutlet UITextField *signup;
@property (nonatomic, weak) IBOutlet UITextField *login;
// IBOutlets should be weak, other properties should be weak or strong for objects, or assign for structs and values.
@end


@implementation ViewController

// You don't have to synthesize your properties anymore.

- (IBAction)type:(id)sender {
    [self.signup resignFirstResponder];
    [_login resignFirstResponder];
    // but you do have to either use self. or underscore to refer to them.
}

@end